Imo if you can run existing Android apps in resizable windows it would be a huge win. There are many well made Android apps that would work just fine as their own windowed applications
Several streaming services have native apps on both mobile & desktop. I think that their mobile apps could run pretty well on desktop.
For many complex apps though (like anything dealing with text edition), the lack of hover & right clics handling would be a pain.
Android supports 'hover' events (and since API 1 IIRC) but nobody implements them in custom widgets.
Android supports mouse input but even as an android engineer I have no idea what the right click does in that situation.
BUTTON_SECONDARY is reported in the getButtonState() of the MotionEvent, but I'm not sure most apps ever check that. I would guess in a lot of cases, if there is only checking on pointer down and up, it will act like the left mouse button.
I know this is a cop-out, but wouldn't Google Docs work just fine in the browser here. I mean I haven't done any work on Google Docs, but I did use it all the way through uni.
Or maybe we should just force everyone on Vim and world would be more glorious and productive place.... right?